problem with doubles

[Michael P.]

Jarrett Billingsley Wrote:

> "Michael P." <baseball.mjp at gmail.com> wrote in message 
> news:g7n3i3$bfm$1 at digitalmars.com...
> > Steven Schveighoffer Wrote:
> >
> >> "Michael P." wrote
> >> > So I've attached the file for a very simple program I'm working on.
> >> > The problem comes from past contests questions, see this:
> >> >
> >> > http://www.cemc.uwaterloo.ca/ccc/past/previous_contests.shtml
> >> >
> >> > The problem I've having is with 2008 Junior problem 1. Every time with 
> >> > my
> >> > code it says you are overweight, when it is supposed to say normal 
> >> > weight.
> >> > So I tried printing out the value I was comparing, and it said nan. 
> >> > Anyone
> >> > know why?
> >> > -Michael P.
> >> >
> >>
> >> scanf is a C function.  You need to exactly specify the type in the 
> >> string,
> >> so use %lf for double
> >>
> >> -Steve
> >>
> >>
> >
> >
> > Thanks, that worked.
> > BTW, I know that readf is the D equivalent of scanf(right?), but I don't 
> > know how to use it.
> > I should be using readf and writef instead of scanf and printf right?
> 
> Yes and yes.  I really wish the C library were harder to use from D.  So 
> many newcomers end up overusing it and then wonder why they have so many 
> issues.
> 
> readf is very easy to use.  Just like writef and friends, the function knows 
> the type of the argument without having to look at the format string. 
> 
> 


Do you mind giving me an example of using it? For example, reading in an integer, a string, and a double, in one statement( if possible ) and/or multiple statements?